abstract appearance backdrop background close-up color colored colors colour coloured colours decorative Dirt feel garden garden-pebbles gray grey pebble-patch pebbles river-rocks rocks rounded shape shaped shapes shiny small smooth smoothed streaks striations surface surfaced surfaces surfacing tactile texture textured textures thick thin variations varied variety veined veins architectural barrier basic brick-wall bricks brickwork cement coloring colouring constructed exterior external linear lines mortar perspective perspectives secure security solid standard strength strong style traditional-brick-wall variation various wall walled wallpaper well-built windows colorful colourful construction contrast cutouts decorated decorations firm rough brick builders building concrete construction-work holes hollow rectangular uneven